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MOD29E1D and MYD29E1D Local Sea Ice Attributes, Version 5

Local attributes describe the data and provide summary information about the results of the sea ice algorithm. Two types of local attributes are reported: Hierarchical Data Format (HDF) predefined and custom local attributes.

HDF Predefined Local Attributes

Attribute Name Reserved Label(s) Definition Sample Value
Label long_name Long name of the Scinetific Data Set (SDS). Estimated sea ice surface temperature 4 km North Pole grid
Unit units International System of Units (SI) of the data. This attribute may or may not be used. degree_Kelvin
Format format How the data should be viewed in Fortran format notation f4.1
Coordinate system coordsys Coordinate system to use for the data cartesian
Range valid_range Maximum and minimum values within a selected data range 22320,31320
Fill Value _FillValue Data used to fill gaps in the swath 7
Calibration scale_factor
Value by which each data element is to be multiplied¹ 0.01
scale_factor_err Error induced by scaling¹ 0.0
add_offset Value to add to each array element¹ 0.0
add_offset_err Error induced by offset¹ 0.0
calibrated_nt HDF data types of the calibrated data¹ 23

¹ These values are only used for Ice Surface Temperature (IST).



Custom Local Attributes for the Sea Ice by Reflectance NP Field

Attribute Name
Definition
Sample Value
Key Key to the meaining of the coded integers within the SDS.
Value
Description
0 = missing data missing data
1 = no decision no decision
11 = night darkness, terminator, or polar
25 = land land
37 = inland water lake or inland water
39 = ocean ocean
50 = cloud cloud obscured
200 = sea ice  
253 = no input tile expected  
254 = non-production mask  


Custom Local Attributes for the Ice Surface Temperature NP Field

Attribute Name
Definition
Sample Value
Key Key to the meaining of the coded integers within the SDS.
Value
Description
0.0 = missing missing data
1.0 = no decision no decision
5.0 = non-production mask  
7.0 = tile fill  
8.0 = no input tile expected  
25.0 = land land
37.0 = inland water lake or inland water
50.0 = cloud cloud obscured


Custom Local Attributes for the Sea Ice by Reflectance SP Field

Attribute Name
Definition
Sample Value
Key Key to the meaining of the coded integers within the SDS.
Value
Description
0 = missing data missing data
1 = no decision no decision
11 = night darkness, terminator, or polar
25 = land land
37 = inland water lake or inland water
39 = ocean ocean
50 = cloud cloud obscured
200 = sea ice  
253 = no input tile expected  
254 = non-production mask  


Custom Local Attributes for the Ice Surface Temperature SP Field

Attribute Name
Definition
Sample Value
Key Key to the meaining of the coded integers within the SDS.
Value
Description
0.0 = missing missing data
1.0 = no decision no decision
5.0 = non-production mask  
7.0 = tile fill  
8.0 = no input tile expected  
25.0 = land land
37.0 = inland water lake or inland water
50.0 = cloud cloud obscured